The Blasphemer's Outfit

The Blasphemer's Outfit may have its six crafting diagrams found in Flotsam. Berthold Candeleria, the smith apprentice with whom you deal with, has the diagrams for sale. Wearing the complete set makes Geralt immune to the curse, but if he is only using part of this set (including the weapons), his life will drain to zero (killing him if you allow this status to continue).

Blasphemer's Armor

Costs: 150 Oren to Craft

14x Studded Leather

8x Nekker Claws

4x Amethyst Dust

4x Diamond Dust

6x Robust Cloth

For the armor's ingredients, a trader at Flotsam's waterfront (near the entrance Triss takes from the Prison Barge) sells diagrams to create Robust Cloth, Studded and Hardened Leather. Considering the latter two components can be hard to find, you may want to spend the 1600 Orens on those diagrams, instead of buying the components piece-meal.

Blasphemer's Boots

Costs: 25 Oren to Craft

4x Hardened Leather

2x Studded Leather

6x Robust Cloth

1x Endrega Hide

All components except the leather pieces are hard to find; the Endrega hide can be purchased, but you get plenty fighting the spiders (endrega) in the forest around Flotsam.

Blasphemer's Gauntlets

Costs: 40 Oren to Craft

6x Hardened Leather

2x Robust Cloth

4x Twine

2x Endrega Venom

Again, the hardened leather is the hardest component to find in bulk (hence the diagram suggestion -- see the Blasphemer's Armor); the Endrega venom is quite common once you start hunting the spiders in the forest.

Blasphemer's Trousers

Costs: 40 Oren to Craft

4x Hardened Leather

4x Studded Leather

6x Robust Cloth

4x Endrega Hide

The hardened leather and robust cloth are the hardest components to find in bulk (hence the diagrams suggestion -- see the Blasphemer's Armor); the Endrega hide is quite common once you start hunting the spiders in the forest.

Anathema (Silver Sword)

Costs: 135 Oren to Craft

12x Silver Ore

4x Iron Ore

3x Timber

2x Yellow Meteorite

4x Nekker Teeth

Yellow Meteorite is rather rare, and you may either get lucky (finding it in random searchable stashes) or you have to build it from a diagram. You can buy Silver Ore from Berthold, if you need it (he needs 24 game-hours to regenerate his store stash).

Ultimatum (Steel Sword)

Costs: 125 Oren to Craft

12x Iron Ore

2x Hardened Leather

2x Timber

1x Diamond Dust

5x Nekker Teeth

All the components here are easy to get. Iron ore is surprisingly common, unlike Minecraft.